Our Experience

CET About Us

Established in 1987, CET Technology is an electrical components manufacturing company that provides the Worldwide OEM marketplace with high quality, competitively priced standard and custom magnetics. We manufacture a full line of ROHS compliant components including Transformers (audio transformer, current transformer, custom transformer, electrical transformer, ferrite transformer, high frequency transformer, high voltage transformer, isolation transformer, laminated transformer, low voltage transformer, power transformer, toroidal transformer) Power Supplies, Inductors (inductor, toroidal inductor), Coils, Chokes and DC/DC Converters.

We built our business on the principle of developing long-term relationships with all of our customers. Returning and satisfied customers are always the most favorable form of advertising. We are committed to working for you, supplying solutions for design, sampling, prototyping, and production parts through high quality manufacturing and on time delivery.

CET Technology LLC Building

Quality and Global Standards

The Cet Technology an Electrical Components Manufacturing Company still runs its business with quality in mind. So that they meet foreign standards, all of their products go through strict testing and quality control procedures. For consistency, dependability, and long-term performance, advanced manufacturing methods are used and tight oversight is maintained.

High levels of automation and repeatability are built into the company’s production facilities, which are spread out across several areas. Along with supporting efficient large-scale manufacturing, this makes sure that every part meets exact specs. The company sends reliable goods to customers all over the world by combining global manufacturing ability with localised knowledge.

Along with quality, one of the most important things is on-time arrival. In order to meet project deadlines without lowering the quality of its work, the company has created efficient supply chain methods. This company’s reliability attracts businesses seeking dependable production solutions.

Our professional and courteous staff is here to provide technical support and world-class customer service. We pride ourselves on our ability to support your project from conception to completion.

CET Contact Us

Thank you for taking the time and interest in CET Technology. For immediate service call us directly at (603) 894-6100. If you would like to request a quote on one of our products please click here.

CET Technology
27 Roulston Rd, Windham NH 03087
Phone: (603) 894-6100
Fax: (603) 894-6161
cet@cettechnology.com

Submit a Request

Frequently Asked Questions.

Can transformers be both toroidal shape and work in low frequency?

CET Technology makes many toroidal transformers, and they do work at low frequency such as 50/60Hz. These low frequency toroidal transformers are usually made with tape wound cores. There are different types (different thickness, different grades) of tape wound cores to choose some, depending on the applications.

Can CET Technology offer low frequency toroidal transformers in cheap prices?

CET Technology offers highest quality low frequency toroidal transformers in very competitive prices. Please give us an inquiry to find out!

Why do toroidal transformers generate lower electromagnetic interference (EMI) compared to EI transformers?

Toroidal transformers use a closed-loop magnetic core, which keeps most of the magnetic flux contained inside the core. Because the magnetic path is continuous and has no air gaps like EI cores, stray magnetic fields are significantly reduced. This results in lower EMI and reduced noise, making toroidal transformers ideal for audio equipment, medical devices, and sensitive electronics.

How do I determine the correct power rating (VA) for a low-frequency toroidal transformer?

The required transformer power rating is determined by multiplying the output voltage by the output current (VA = V × I) for each secondary winding and adding them together. It is also recommended to include additional margin (typically 20–30%) to account for efficiency losses, temperature rise, and transient loads. This ensures the transformer operates reliably without overheating.